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Easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer and preparation method thereof

A thermoplastic polyurethane and easy-to-process technology, which is applied in the field of easy-to-process halogen-free flame-retardant thermoplastic polyurethane elastomer and its preparation, can solve the problem of reducing the mechanical properties of materials such as tensile strength and elongation at break, so as to reduce sensitivity and improve Ease of processability and effects of small fluctuations

Inactive Publication Date: 2017-01-04
SUZHOU HENGLI COMM MATERIAL
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  • Description
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  • Application Information

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Problems solved by technology

However, the flame retardancy of thermoplastic polyurethane in the prior art requires the addition of a large amount of halogen-free flame retardants, which often s

Method used

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  • Easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer and preparation method thereof
  • Easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer and preparation method thereof
  • Easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer and preparation method thereof

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Abstract

The invention relates to an easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer and a preparation method thereof. The easy-processing and halogen-free flame retardant thermoplastic polyurethane elastomer is prepared from, by weight, 30-80% of thermoplastic polyurethane resin, 5-30% of a processing modifier, 0.5-15% of a compatilizer, 10-30% of halogen-free flame retardant, 1-10% of flame retardant synergist, 0.5-3% of lubricant, 0.1-2% of antioxygen and 0-5% of non flame-retardant additives. With the method, V0 flame-retardant level 80-90A in hardness, tensile strength larger than or equal to 20Mpa, tear strength larger than or equal to 50KN/m and 3mm in Ul94 standard thickness is obtained according to different thermoplastic polyurethane composites, easiness in processing is achieved, and viscosity is small in change with fluctuation of temperature and shearing speed.

Description

technical field [0001] The invention relates to an easy-to-process halogen-free flame-retardant thermoplastic polyurethane elastomer and a preparation method thereof. Background technique [0002] Thermoplastic polyurethane elastomer, referred to as TPU, has excellent elongation recovery, cold resistance, oil resistance, abrasion resistance, bending resistance, ozone aging resistance and other characteristics, and its wear resistance is second to none. It is widely used in industry, automobile industry, shoe industry, wire and cable and other industries. However, the processing temperature range of TPU is very narrow. Under a certain temperature and shear rate, small fluctuations in temperature and shear rate will cause sharp changes in viscosity, resulting in very unstable quality of extruded products and seriously affecting product quality. In addition, thermoplastic polyurethane has poor flame retardancy. Once burned, the flame will be very violent and accompanied by thi...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08L75/06C08L53/02C08K13/02C08K5/3492C08K3/34C08K3/22C08K3/38B29C47/92B29C48/92
CPCB29C48/92B29C2948/9258C08K2201/014C08L75/06C08L75/08C08L2201/02C08L2201/22C08L2205/025C08L2205/035C08L2207/04C08L53/025C08K13/02C08K5/34928C08K3/34C08K2003/2296C08K5/34922C08K2003/387
Inventor 何晓东廖永江马慧婷
Owner SUZHOU HENGLI COMM MATERIAL
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